Solar unit for use in stock tanks and small ponds to keep water in unfrozen state in winter so animals may drink it



FIG. 1 is a top view of my solar unit for use in stock tanks and small ponds to keep water in unfrozen state in winter so animals may drink it showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is an upper, perspective view thereof. 

The ornamenal design for a solar unit for use in stock tanks and small ponds to keep water in unfrozen state in winter so animals may drink it, as shown and described. 